Not just for newbies
Strange so many say for 'non-techies'. Truth is, almost all linux distros (and indeed even Windows)!is suitable for techies. If you programme and use terminal, you can do all this with almost all distros (and windows!). What is meant is ... It's suitable for non techies. Fundamentally it's user friendly, versatile and stable, even if you don't use the terminal. But why would a techie choose something that's not stable versatile or user friendly? Ok, you might be experimenting...but from software to programming it's as good or better than any other options.
Mint has become bigger.. but as title suggests, instead of just being 'based on' Ubuntu, it is actually a large improvement on Ubuntu.
I constantly look around for faster or better packages than Mint, but things like MX Linux etc, but they suck in comparison. Mint consistently outperforms others whilst being user friendly. Only drawback is that packages in repository can be a little dated. But unlrss you want something specific in new software versions that you can't get (and don't want flatpak), best to go with stability and usability.
If you doing work, Mint. For personal use, Mint. For programming, Mint. For customizability, Mint. For stability, Mint. But hey, some people like their distro solwer or less stable, so choice is yours.